Trouble light



Patented June 5, 1928.

UNITED. STATES PATENT OFFICE.

WILLIAM LONSDALE, OF ROSELLE PARK, NEW J ERSEY,-ASSIGN OR, BY KESNEASSIGN- MENTS, TO FOSTER WHEELER CORPORATION, OF NEW YORK, N. Y., ACORPORATION OF NEW YORK.

HEAT EXCHANGER.

This invention relates to an improvement in heat exchangers such forexample as are commonly employed in power plants, as surface condensers.feed water heaters. or the like, and as auxiliaries in refiningpetroleum in the oil industry. In these and similar types of heatexchangers, it is customary to employ a shell containing a plurality oftubes. with means for passing one medium to and from the space withinthe shell and another medium to and from the tubes causing the same toflow through the tubes. In many uses to whiclrthese heat exchangers areadapted it is necessary to employ baflles preferably placed transverselywithin the shell so as to cause the medium passing through the shell andaround the tubes to follow a sinuous or tortuous path to effect amaximum transfer of the heat from one to the other of the mediumspassing through the apparatus. In some instances due to the pressureunder which the medium passing through the space in the shell is forcedthrough the same there is considerable leakage between the passesthrough which the medium is causedto flow, obviously, re-- ducing theefiiciency of the apparatus to a material extent. It will therefore, bereadily appreciated that to provide an efficient apparatus itisnecessary to provide a rela tively tight joint around the battles inorder to prevent this leakage or the short circuiting of the mediumwhich flows through the space inthe shell.

The object of the present invention is to provide a yielding orresilient packing for the baflies of aheat exchanger of the type towhich reference has been made, and to this end in carrying out theinvention the apparatus is fitted with slotted tubes adapted to receivethe edge portions of a bafile and to resiliently engage the same so asto make a joint sufficiently tight to obviate the leakage or shortcircuiting of the medium pass- 1 ing through the shell, thereby causingeach pass for the medium irrespective of the number of passes to berelatively tight by which the niedium is maintained in its proper courseand the efliciency"of the apparatus thereby correspondingly increased.In carrying out the invention the resilient joints for the battles areso constructed and applied as to make it possible to remove theApplication filed m 27, 1927. Serial No. 208,675.

bafiies together with the tubes, for the purposes of inspection,repairs, and the like.

In the drawing in which theinvention is illustrated, Figure 1 is alongitudinal section and partial elevation of a heat exchanger.

Fig. 2 is a section on line 2--2, Fig. 1 on Fig. 6 is a view similar toFig. 5 showing still another form of the packing.

Fig. 7 is a. transverse section illustrating a. form of circularpacking.

Fig. 8 is a partial longitudinal section on line 88, Fig. 7.

Fig. 9 is a partial side elevation illustrating the form of circularpacking shown in Figures 7 and 8.

Fig. 10 is a plan of the inner side of a sec tiogli of tubular packingas shown in Fig. 9, an

Fig. 11 is a section showing another form of the invention. In thedrawing the shell of a heat exchanger .is designated at 10. This ispreferably made of steel or other similar material and will stand thenecessary pressure, and also as illustrated, is preferably cylindrical.Adjacent one-end the shell is provided with a nozzle 11 as an inletconnection for a medium to or from which heat is to be imparted orextracted, and in an oppositely disposed position the shell is providedwith a nozzle 12 forming a discharge connection for this medium. At theend adjacent the nozzles the shell is flanged as indicated at 13. Atthis end of the shell there is a tube plate 14, a box 15 having inletand outlet nozzle connections 16 and 17 for another medium to or fromwhichheatis to be imparted or extracted, together with a cover or bonnet18. The shell, the tube plate, and the box and the bonnet are connectedto each other in anysuitable manner well known in the art, andinteriorly the box, as illustrated, is

' provided with a transverse partition wall 19. At the opposite end ofthe shell the same is flanged and provided with a floating head or tubeplate 20, and suitably secured i aaented June 5, 1928. L Y UE EETEDSTATES; PATENT OFFICE,

LOUIS LUDWIG, OF BROOKLYN, NEW YORK.

, TROUBLE LIGHT.

Application filed June 21, 1927. Serial No. 200,360.

